Pump mechanism



J. W. VAN METER.

PUMP MECHANISM- APPLICATION FILED 1uLY21. 1919.

1 ,358,800, Patented Nov. 16, 1920.

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ATTORNEY J. W. VAN METER.

PUMP MECHANISM. APPLICATION FILED JULY 21, 1919.

1,358,800. PatentedN0v.16,1920,

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ATTORNEY J. W. VAN METER.

PUMP MECHANISM. APPLICATION men JULYZI, I919 Patented Nov. 16, 1920.

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1,358,800. Patented Nov. 16, 1920.

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JAMES W. VAN METER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO GRANVILLE MOORE, OF SAN FRANCISCO, CALIFORNIA.

PUMP MECHANISM.

Specification of Letters Patent.

Patented Nov. 16, 1920.

Application filed July 21, 1919. Serial No. 312,448.

To all whom. it may concern:

Be it known that I, JAMES W. 'VAN lVIE'lER, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have made a new and useful inventionto wit, Pump Mechanism; and I do hereby declare the following to be a full, clear, concise, and

exact description of the same.

This'invention relates to a new, novel and useful improvement in pumps.

The principal object of this invention is to construct a pump which will utilize the direct expansive force of an internal combustion engine in combination with compressed air.

Another object of this invention is to pro vide a pump which will be capable of automatic regulation.

Another object is to produce a pump which will work evenly and without the usual jar incident to the explosion within a combustion chamber.

Another object is to provide a structure which maybe readily attached to the head casting of an ordinary deep well pump thereby utilizing the pump machinery located within the well.

Other objects and advantages will appear as the description proceeds.

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also to be understood that in and by the claims following the description it is desired to cover the invention in whatever form it may be embodied.

In the drawings Figure 1 is a side elevation of my pump actuating mechanism attached to the top of a well casing.

Fig. 2 is a verticalcross section of Fig. 1.

Fig. 3 is an enlarged detail view of the compressed air'rectifier and control valve.

V, .Fig. 4 is a cross section taken on the line IVIV of Fig. 2. I a

Fig. 5 is an enlarged detail view taken on the line V-V of Fig. 1. v

Fig. 6 is a fragmentary detail view of a valve latch mechanism. I 1

Fig. 7 is a detail view partly in section disclosing the manner of operating the latch mechanism.

Fig. 8 is a detail view in cross section of the fuel pump.

Referring to the drawings in detail, the numeral 6 designates the well casing which is closed by a cap 7, having a stuiiing box 8 mounted therein. A pump rod 9 passes through said stufiing box and cap into said well casing. This casing also supports a casting 11 having an opening 12 for the escape of fluid from the well. This casting also supports vertical tubular members 13 and 14, which in turn support at their extreme upper ends a head casting 16. This head casting is provided with a vertical central bore 17 extending part way therethrough, and also a bore 18 in axial alinement with the bore 17. These bores carry pistons 19 and 21 respectively. The piston 19 is connected by a cable 22 to the lower portion of the piston 21 through the medium of a collar 23 pinned to the piston 21 as shown at 24. The lower-end of the piston 21 is bored to receive the upper end of the pump rod 9 which is held within this bore by wedges 26 and 27. A yoke 28 is provided for retaining the piston 19 in engagement with the cable 22.

The head casting 16 is also provided with longitudinal bores 29 and 31 parallel to the bores 17 and 18. These bores 29 and 31 ex tend entirely through the length of the head casting and are closed at their upper ends by means of plugs 32 and 33.

Mounted within these bores and adapted to reciprocate therein are valve rods 34.

The one on the left of the drawing or exhaust valve carries a piston 36 at its upper end, an elongated piston 37 near its central portion and an abutment 38 near its lower portion.

The valve to the right of the drawing carries a piston 39 at its upper end, a short piston 41 near its central portion and elongated piston 42 near its lower portion. These valves are held in place by screw threaded caps 43 containing a spring 44 which tend tokeep the valve rods 34 in the position shown in Fig. 2. These pistons 36 and 39 fit loosely so that the compressed air acting thereon will leak past and exhaust to the outer atmosphere through the port 50, it being understood that the admission of the compressed air is but momentary.

Fig. 5 discloses the construction of the exhaust valve in detail, but in its lowermost position. These valve rods are held in their lower positions by means of latches, best shown in Figs. 5 and 6,wherein the numeral. 46'designates a piston attachedto a sliding member 47, normally held in the position shown by a spring 48 contained within a screw cap 49. A plug 51 closes the outer end of the chamber within which the piston 46 moves, and a passage 52 therethrough provides means for allowing compressed air to operate said piston 46 against the tension of the spring 48 for the purpose of releasing the valve rods 34 and allowing the springs 44 to move the same upwardly.

The piston 46 is fitted loosely so that compressed air acting on the same will cause the piston to move far enough to allow the spring 44 to act, and as this compressed air will leak past the piston 46 the air in the cylinder will lose its pressure, it being unders'ood that the emission of compressed 'air to the piston 46 is momentary. The compressedair leaks past the piston 46, exhausts to the outer .atmosphere through a port (see Fig. 5).

In Fig. 7 I have shown a fragmentary section of the head of the piston 19 which is adapted to contact with a push rod '53 supported upon the side of the head casting 16 and havingitslower portion extending into a compressed air chamber 54'. The lower end of this .rod is provided with a valve 55 adapted to seat upon a seat 56 formed in thelower portion of the compressed air chamber 54. A spring 57 having its ends in contact with the top of the compressed air chamber 54 and a collar attached to the push rod 53 holds. the valve 55 in contact with its seat 56. hen the piston head 19 strikes the piston rod 53,

the valve 55 isdepressed so that compressed air from the pipe 59 can enter the'compressed air chamber 54, pass the valve 55 and into the pipe 60 from which it passes to the plugs 51 thence through the opening 52 and acts upon the pistons 46. The .pipe 59 has a connection 59' extending to the pipe 62, so as to receive compressed air from the air .bottle 61. The pipe 59 also furnishes compressed air to the valve cylinder 31 through a suitable port in the casting.

Referring now to Fig. 3, the numeral61 designates a compressed air bottle having a suitable pipe connection 62 from said bottle to the head casting 16. This pipe provides a passage for the air from said bottle to the space beneath the piston 19, and the fiowof air from the bottle to said piston is con- 7 trolled by a by-pass 63 having. a valve..64

located therein A valve 66 is provided within the pipe 62 at a point midway of said bypass, the purpose of which is to allow compressed air from below the piston 19 to return to the air bottle at the time that the piston 19 moves down due to the explosive stroke of the piston 21 to which it is connected by the cable 22. Compressed air is also led from this air bottle by connection not shown to a port in the bore 31.

Referring now to Fig. 8, the same discloses the fuel pump attached to the side of the head casting, as shown in Fig. 1. The same consists of an H-shaped casting 67 having a bushing 68 screwed into the lower end. This bushing is provided with a tubular portion 69 which limits the downward movement of a pump rod 71. This pump rod is limited as to its upward movement by a stop 72. A pipe 73 conveys compressed air from the pipe 59, which compressed air acts upon the upper end of the pump rod 71 to cause its 'movement downwardly. The upward movement of the rod is caused; by its contact with an-abutment carried upon the collar 23. This upward movement causes fuel to be drawn from the pipe 74, past check valve 75 into the space 76. As soon as the rod 71 is free to move downwardly, compressed air from the pipe 73 will cause this movement to force the fuel drawn through the valve 75 to pass outwardly from the space 76, past the valve 77, through pipe 78, port 79 and into the explosion cylinder 18. 7

At 81 is shown a port connecting through a T to pipes which lead to a point beneath the plugs 32 and 33 and just above'the pistons 36 and '39. A groove 82 is formed in the side of the piston 19 and adapted to register with the port 81, the purpose-of which will be hereinafter described. A water jacket is providedaround the bore 18 for the purpose of coolingthe same from the effects of continuous explosionscaused by a spark plug 83. i

The operation of the pump is as follows 3- Assuming that the parts are in the position shown in Figs. 1 and 2, the valve 64 is opened whlch allows compressed "air topass from the bottle 61 through the pipe 7 62,

through by-pass 63 past the valve 64 a11denter the head casting '16 at a point beneath the piston 19. This compressed air causes the piston to rise and to carry with it the cable 22, piston 21 and the pump rod 9.

.WVhen the piston 19 has risen'until the groove 82 registers with the port 81,,com pressed air is allowed to escape through the Tconnectionto a point above the pistons 36 and 39. This forces the same downwardly wherethey are held by the sliding members 47 thereby closing the exhaust port 84, and opensthe intake port 85, which allows compressed .air to enter from" the bore 31. Upon entering the port85," a jet of gasolene is encountered from the port 79 with the result that an explosive mixture is formed above the piston 21. The pressure Within the piston will soon balance the pressure beneath the lifting piston 19, at which time a spark explodes the mixture above the piston 18 and drives the same downwardly until the head of the piston 19 encounters the push rod 53, which will allow compressed air to escape from the pipe 59 past the valve 55, through the pipes 60 to the pistons 16 which will be moved causing the sliding members 47 to move out of the path of the pistons 37 and 11, thereby allowlng the springs 44 to cause the valve rods 34 to move upwardly. This will uncover the exhaust port 84 and allow the gases to pa s from the bore 18 to the hollow member 13, from which these gases will exhaust, and at the same time the compressed air will be shut off from the port 85. This will result in the compressed air again raising the piston 19 which will be the beginning of another cycle of operation.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is as follows 1. A pump mechanism comprising a gravity dropping pump rod, explosive means for augmenting the gravity drop of the pump rod, and means for automatically raising said pump rod after its drop back to its normal position for repeated dropping.

2. A pump mechanism comprising a gravity dropping pump rod, an internal combustion engine adapted to augment the gravity drop of said pump rod by an explosion of gas, a compressed air device adapted to raise said pump rod after its drop back to its initial position for repeated dropping.

3. A pump mechanism comprising a gravity operated pump rod, an internal combustion engine adapted to augment the drop of said rod by an explosion of gas, a compressed air device adapted to raise said pump rod after its drop back to normal position for repeated dropping, controlling valves regulating said compressed air and means for conveying the compressed air after rais ing said pump rod to a compressed air latch for the purpose of releasing said controlling valves.

4. A pump mechanism having a gravity operated pump rod, an internal combustion engine adapted to augment the gravity drop of saidpump rod through the explosion of gas wit in said engine, a compressed air device adapted to raise said pump rod after its drop back to normal position for repeated dropping, means for conveying compressed air to the mixing chamber of an internal combustion engine, and means for there mixing it with a liquid fuel for repeated explosion.

5. A pump mechanism comprising a gravity dropping pump rod, an internal combustion engine adapted to accelerate the drop of said pump rod, a compressed air device adapted to raise said pump rod after its drop, means for conveying compressed air after said pump rod has been raised to the mixing chamber of an internal combustion engine, and means for conveying the compressed air after raising the pump rod back to the compressed air device for repeated raisings of the pump rod.

6. In a pump mechanism, the combination of a well casing, a base supported upon said well casing, a head casting supported above said base, a pump rod mounted beneath said head casting, a piston reciprocating in said casting and attached to said pump rod, and a lifting piston mounted above said first mentioned piston and adapted to raise said first mentioned piston and said pump rod.

7. In a pump mechanism, the combination of a well casing, a base mounted on said well casing, a casting supported above said base, a piston reciprocating in said casting and adapted to reciprocate a pump rod extendr ing into said well casing, a. lifting piston mounted above said first mentioned piston, and adapted to raise the same, and a flexible connection between the lifting piston and said first mentioned piston.

In testimony whereof, I have hereunto set my hand at San Francisco, California, this 30th day of June 1919.

JAMES WV. VAN METER. n presence of- A. J. HENRY. 

